{"product_id":"liftmaster-lmtbul","title":"LiftMaster LMTBUL Monitored Through-Beam Photo Eyes with Heater — Up to 90-Foot Range","description":"\u003cp\u003e\u003cstrong\u003eThe LiftMaster LMTBUL is a monitored through-beam photo-eye system for approved LiftMaster gate operators, with a published sensing range of up to 90 feet. A separate emitter and receiver establish the detection path across the opening. The system includes a thermostatically controlled heater and outdoor-rated housings for the intended installation environment. Select it by operator compatibility, opening layout and power arrangement; LiftMaster does not recommend the heater for solar applications.\u003c\/strong\u003e\u003c\/p\u003e\u003ch2\u003eCompatibility — Models, Versions and Exclusions\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel or selection point\u003c\/th\u003e\n\u003cth\u003eCompatibility requirement\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer-listed gate families\u003c\/td\u003e\n\u003ctd\u003eCSL24UL, CSW24UL, CSW200UL, LA400UL, LA412UL and LA500UL; verify the exact installation manual.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdditional listed families\u003c\/td\u003e\n\u003ctd\u003eRSL12UL, RSW12UL, SL3000UL, SL585UL and SL595UL; confirm the required monitored input.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/garage-doorparts.com\/products\/liftmaster-lmrrul-monitored-retro-reflective-photo-eye\"\u003eLMRRUL\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eA different retro-reflective system. Its sensor components are not interchangeable with LMTBUL.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolar-powered installations\u003c\/td\u003e\n\u003ctd\u003eThe heater is not recommended for solar use; have the installer select an approved low-power arrangement.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eThrough-Beam Protection Versus a Reflector-Based System\u003c\/h2\u003e\u003cp\u003eWith LMTBUL, the emitter sends light across the opening to a separate receiver. Both locations and their wiring must be planned. A retro-reflective product such as \u003ca href=\"https:\/\/garage-doorparts.com\/products\/liftmaster-lmrrul-monitored-retro-reflective-photo-eye\"\u003eLMRRUL\u003c\/a\u003e uses a different optical arrangement, so changing between the two is a system-selection decision rather than replacing one sensor with a similar-looking housing. Check the actual components already installed.\u003c\/p\u003e\u003cp\u003eA long advertised range does not remove the need for alignment and a suitable mounting location. Movement of posts, obstructions and the site layout can affect the beam path. Use the manufacturer’s alignment indicators and installation instructions, and have the technician identify every entrapment zone; a single beam cannot be assumed to protect the entire gate installation.\u003c\/p\u003e\u003ch2\u003eSpecifications and Product Identification\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eLMTBUL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensing method\u003c\/td\u003e\n\u003ctd\u003eMonitored through beam; separate emitter and receiver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum published range\u003c\/td\u003e\n\u003ctd\u003e90 ft \/ 27.4 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutdoor rating\u003c\/td\u003e\n\u003ctd\u003eNEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeater\u003c\/td\u003e\n\u003ctd\u003eThermostatically controlled; not recommended for solar applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature\u003c\/td\u003e\n\u003ctd\u003e-40°C to +65°C \/ -40°F to +149°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eListed cable length\u003c\/td\u003e\n\u003ctd\u003e10 ft \/ 3 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eBefore Ordering\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRecord the complete gate-operator model and approved photo-eye reference.\u003c\/li\u003e\n\u003cli\u003eMeasure the opening and identify suitable emitter and receiver mounting positions.\u003c\/li\u003e\n\u003cli\u003ePlan wiring and heater power; review the solar restriction before purchase.\u003c\/li\u003e\n\u003cli\u003eIdentify whether additional edges or other approved protection devices are required elsewhere.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003ePackage Contents and Separate Requirements\u003c\/h2\u003e\u003cp\u003eThe manufacturer identifies the photo-eye components, protective hoods, brackets, mounting hardware and 10-foot wire. Confirm the current carton and any extra cable or mounting materials required for the site. This is a wired safety accessory; do not interpret wireless communication between some gate operators as a wireless LMTBUL sensor connection.\u003c\/p\u003e\u003ch2 class=\"safety-warning\"\u003eSafety Warnings — Read Before Installation or Service\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWARNING: A wrongly positioned or untested photo eye can leave a dangerous entrapment zone unprotected. Installation requires a trained gate-systems technician.\u003c\/li\u003e\n\u003cli\u003eDisconnect operator power before wiring, and follow the specified sensor and heater connections.\u003c\/li\u003e\n\u003cli\u003eNever bypass the monitored circuit or operate normally with a failed, blocked or misaligned safety device.\u003c\/li\u003e\n\u003cli\u003eTest the beam interruption response and monitored fault behavior after installation. Keep the gate out of service if required protection fails.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eRelated Products and Important Differences\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/garage-doorparts.com\/products\/liftmaster-lmrrul-monitored-retro-reflective-photo-eye\"\u003eLMRRUL monitored retro-reflective photo eye\u003c\/a\u003e — compare the different optical layout; do not mix sensor components.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/garage-doorparts.com\/products\/liftmaster-small-profile-monitored-edge-with-aluminum-channel-4ft\"\u003eS504AL 4-foot monitored safety edge\u003c\/a\u003e — a contact-sensing option where a properly sized edge is required in addition to the approved beam protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/garage-doorparts.com\/products\/liftmaster-lmwekitu-monitored-wireless-edge-kit-for-gate-operators\"\u003eLMWEKITU monitored wireless edge kit\u003c\/a\u003e — a connection option for compatible resistive edges, not a wireless adapter for LMTBUL.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eCan I reuse an \u003ca href=\"https:\/\/garage-doorparts.com\/products\/liftmaster-lmrrul-monitored-retro-reflective-photo-eye\"\u003eLMRRUL\u003c\/a\u003e sensor with LMTBUL?\u003c\/h3\u003e\u003cp\u003eNo. LiftMaster’s product guide says the two products’ sensor components are not compatible with each other.\u003c\/p\u003e\u003ch3\u003eIs it suitable for a solar-powered gate?\u003c\/h3\u003e\u003cp\u003eLiftMaster does not recommend the thermostatically controlled heater for solar applications. Have the installer choose a documented arrangement for the actual power system.\u003c\/p\u003e\u003ch3\u003eDoes a 90-foot range mean no alignment is needed?\u003c\/h3\u003e\u003cp\u003eNo. It is a maximum sensing specification. Correct positioning, alignment and testing remain necessary.\u003c\/p\u003e\u003ch3\u003eCan photo eyes replace every safety edge?\u003c\/h3\u003e\u003cp\u003eNot automatically. Optical and contact devices protect different locations as determined by the installation’s safety assessment.\u003c\/p\u003e\u003ch2\u003eNeed Help Confirming the Right Product?\u003c\/h2\u003e\u003cp\u003e\u003ca href=\"https:\/\/garage-doorparts.com\/pages\/contact\"\u003eContact Garage-DoorParts.com before ordering\u003c\/a\u003e. Send the full equipment model, readable part labels and photographs of the installed assembly. Include the dimensions, electrical configuration or accessory details relevant to your project so the listing can be checked against the actual installation.\u003c\/p\u003e","brand":"Controlled products","offers":[{"title":"Default Title","offer_id":60655766765854,"sku":"LMTBUL","price":414.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/2781\/5710\/files\/lmtbul.jpg?v=1793139862","url":"https:\/\/garage-doorparts.com\/products\/liftmaster-lmtbul","provider":"garage-doorparts.com","version":"1.0","type":"link"}